Fall Out Boy – My Songs Know What You Did In The Dark (Light Em Up)
Karaoke with synced lyrics and pitch scoring · English
Sing My Songs Know What You Did In The Dark (Light Em Up) by Fall Out Boy on singpro.app, a free online karaoke app. Lyrics are highlighted syllable by syllable as the song plays, your pitch is scored in real time, and you can host a party so friends join from their phones and sing along.
The singing starts at 0:07 and runs for 2:58. It stays inside 9 semitones and moves at 2.72 syllables a second.
At a glance
- Difficulty
- Easy
- Vocal range
- 9 semitones
- Pace
- 2.72 syllables a second, steady
- Melody
- steps of 1.4 semitones on average, gentle
- Length
- 2:58 of singing, starting at 0:07
- Golden notes
- 85
- Backing track
- separate instrumental and vocal tracks, so you can mute the original singer
How it starts
Whoa-hoa oh
Oh oh, oh
More karaoke songs by Fall Out Boy
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How it works
- Open the song and allow microphone access – no download or sign-up needed.
- Sing along to the synced lyrics while the app scores your pitch live.
- Share the party code so friends can join and compete from their own devices.